C++ (Cpp) __builtin_operator_delete示例

示例#1

文件： unavailable_aligned_allocation.cpp 项目： mspertus/clang

void testExplicitOperatorNewDeleteOveraligned() {
  void *p = operator new(128, (std::align_val_t)64);
  operator delete(p, (std::align_val_t)64);
  p = operator new[](128, (std::align_val_t)64);
  operator delete[](p, (std::align_val_t)64);
  p = __builtin_operator_new(128, (std::align_val_t)64);
  __builtin_operator_delete(p, (std::align_val_t)64);
}

示例#2

文件： unavailable_aligned_allocation.cpp 项目： mspertus/clang

void testExplicitOperatorNewDelete() {
  void *p = operator new(128);
  operator delete(p);
  p = operator new[](128);
  operator delete[](p);
  p = __builtin_operator_new(128);
  __builtin_operator_delete(p);
}

示例#3

文件： new.cpp 项目： 4ntoine/clang

 // CHECK-LABEL: define void @_ZN8builtins1fEv
 void f() {
   // CHECK: call noalias i8* @_Znwm(i64 4) [[ATTR_BUILTIN_NEW]]
   // CHECK: call void @_ZdlPv({{.*}}) [[ATTR_BUILTIN_DELETE]]
   __builtin_operator_delete(__builtin_operator_new(4));
 }